Abstract: There is provided a sliding member including: a substrate; and a protective film provided on the substrate, wherein the protective film is composed only of a metal base layer provided on the substrate, a low-hardness diamond-like carbon layer provided as a single layer on the metal base layer, and a high-hardness diamond-like carbon layer provided as a single layer directly on the low-hardness diamond-like carbon layer. The sliding member has the protective film which has excellent frictional wear resistance property and satisfactory adhesion property to the substrate, regardless of having a simple structure.

Abstract: There is provided an iris diaphragm device comprising: two blade members supported on two rotary shafts; a lamp optical path between the two blade members; a motor driving directly one of the rotary shafts; and a means of transmitting power from the one rotary shaft to the other, wherein the motor and the means are disposed off the lamp optical path, and the two blade members revolve respectively to the two rotary shafts whereby a blocked area of the lamp optical path is adjusted, and wherein a magnetic sensor including a plate-like magnetic sensing portion and a plate-like magnet and detecting a rotation angle of the rotary shafts is disposed on an axis line of one of the two rotary shafts and also off the lamp optical path such that facing surfaces of the magnetic detecting portion and the magnet are orthogonal to the rotary shafts.

Abstract: A color wheel comprises sectorial color filter segments and a support member. Protrusions are disposed at the support member and engaged with either through-holes or cavities as segment fixing mechanisms formed at the color filter segments, whereby the color filter segments are fixedly positioned with respect to the support member in the radial direction. Consequently, the color filter segments can be surely prevented from getting scattered off when the color wheel spins at high speed.

Abstract: There is provided an iris diaphragm device comprising: two blade members supported on two rotary shafts; a lamp optical path between the two blade members; a motor driving directly one of the rotary shafts; and a means of transmitting power from the one rotary shaft to the other, wherein the motor and the means are disposed off the lamp optical path, and the two blade members revolve respectively to the two rotary shafts whereby a blocked area of the lamp optical path is adjusted, and wherein a magnetic sensor including a plate-like magnetic sensing portion and a plate-like magnet and detecting a rotation angle of the rotary shafts is disposed on an axis line of one of the two rotary shafts and also off the lamp optical path such that facing surfaces of the magnetic detecting portion and the magnet are orthogonal to the rotary shafts.

Abstract: A color wheel comprises sectorial color filter segments and a support member. Protrusions are disposed at the support member and engaged with either through-holes or cavities as segment fixing mechanisms formed at the color filter segments, whereby the color filter segments are fixedly positioned with respect to the support member in the radial direction. Consequently, the color filter segments can be surely prevented from getting scattered off when the color wheel spins at high speed.

Abstract: A color wheel comprises sectorial color filter segments and a support member. Protrusions are disposed at the support member and engaged with either through-holes or cavities as segment fixing mechanisms formed at the color filter segments, whereby the color filter segments are fixedly positioned with respect to the support member in the radial direction. Consequently, the color filter segments can be surely prevented from getting scattered off when the color wheel spins at high speed.

Abstract: In a color wheel comprising a plurality of color filter segments arranged so as to form a disk and a support member fixed to the color filter segments, the color filter segments are each outlined only by a circular arc and two straight lines passing through the center of the disk. Consequently, each of the color filter segments is prepared by cutting the material only to the circular arc and the two straight lines, thereby simplifying the production process. And, the support member can be duly and surely positioned such that the center of the support member is set to coincide with the intersecting point of the two straight lines. Thus, the positional accuracy, the component cost reduction, and the production cost reduction can be achieved at the same time.

Abstract: There is provided a color wheel including a plurality of color filters arranged so as to form a disk, and a retainer member disposed at a center of the disk and formed into a C-ring defining an open mouth portion through which an area of one color filter is exposed. Also, there is provided a color wheel assembly which incorporates the color wheel described above, and which further includes a motor to rotate the color wheel, and a rotational position detector to optically detect a rotational position of the color wheel. Detection light emitted from the detector is set to fall incident on the C-ringed retainer member while the color wheel is rotated thus intermittently impinging on the open mouth portion, namely on the one color filter, which causes the detection light reflected thereby to come out with two different intensities that are sensed by the detector.

Abstract: A color wheel is attached to a hub of a motor before the hub is built in the motor. In this process, portions of the hub which do not impact the rotation accuracy of the motor are held by appropriate clamping means and attaching means so that excessive stress and heat are not applied to bearings of the motor. Then, the hub with the color wheel attached thereto is assembled to the rest of components of the motor.

Abstract: There is provided a color wheel including a plurality of color filters arranged so as to form a disk, and a retainer member disposed at a center of the disk and formed into a C-ring defining an open mouth portion through which an area of one color filter is exposed. Also, there is provided a color wheel assembly which incorporates the color wheel described above, and which further includes a motor to rotate the color wheel, and a rotational position detector to optically detect a rotational position of the color wheel. Detection light emitted from the detector is set to fall incident on the C-ringed retainer member while the color wheel is rotated thus intermittently impinging on the open mouth portion, namely on the one color filter, which causes the detection light reflected thereby to come out with two different intensities that are sensed by the detector.

Abstract: In a color wheel comprising a plurality of color filter segments arranged so as to form a disk and a support member fixed to the color filter segments, the color filter segments are each outlined only by a circular arc and two straight lines passing through the center of the disk. Consequently, each of the color filter segments is prepared by cutting the material only to the circular arc and the two straight lines, thereby simplifying the production process. And, the support member can be duly and surely positioned such that the center of the support member is set to coincide with the intersecting point of the two straight lines. Thus, the positional accuracy, the component cost reduction, and the production cost reduction can be achieved at the same time.

Abstract: A color wheel is attached to a hub of a motor before the hub is built in the motor. In this process, portions of the hub which do not impact the rotation accuracy of the motor are held by appropriate clamping means and attaching means so that excessive stress and heat are not applied to bearings of the motor. Then, the hub with the color wheel attached thereto is assembled to the rest of components of the motor.

Abstract: A color wheel assembly includes a color wheel and a driving motor. The color wheel is attached directly to a hub of the driving motor. Consequently, no additional components are required to fix the color wheel to the driving motor, thereby reducing the number of components and the number of manufacturing processes. Thus, the color wheel assembly as a time-share light dispersing device can be inexpensively manufactured with a high degree of precision.

Abstract: A color wheel assembly includes a color wheel and a driving motor. The color wheel is attached directly to a hub of the driving motor. Consequently, no additional components are required to fix the color wheel to the driving motor, thereby reducing the number of components and the number of manufacturing processes. Thus, the color wheel assembly as a time-share light dispersing device can be inexpensively manufactured with a high degree of precision.

Abstract: A color wheel comprises sectorial color filter segments and a support member. Protrusions are disposed at the support member and engaged with either through-holes or cavities as segment fixing mechanisms formed at the color filter segments, whereby the color filter segments are fixedly positioned with respect to the support member in the radial direction. Consequently, the color filter segments can be surely prevented from getting scattered off when the color wheel spins at high speed.

Abstract: In a color wheel comprising plurality of color filter segments, one of the filter segments consists of a sector portion, and a circular core portion which is formed intergrally at the inner circumferential area of the sector portion, and which is located at the center of the wheel assembled. The inner circumferences of the remaining filter segments are fitted directly to the outer perimeter of the circular core portion of the one segment, whereby the geometric accuracy of the color wheel can be achieved. Also, the alignment process of the filter segments for preventing the color wheel from generating vibrations and noises at the time of spinning at high speed can be simplified or even eliminated thus preventing the number of manufacturing processes from increasing.

Abstract: There is provided a method for manufacturing a color wheel which is structured such that plural kinds of filters functioning either to selectively transmit or to selectively reflect lights having respective different wavelength bands are formed on a disk-like substrate made of a light-transmittable material. The method comprises the steps of: forming a substrate assembly composed of the substrate and a rotary shaft disposed perpendicularly at the substrate; setting on the substrate assembly a masking jig provided with at least one opening to demarcate respective filters of the plural kinds, wherein the masking jig is positioned with reference to the rotary shaft; and forming the respective filters at the substrate assembly with the masking jig set on.

Abstract: A method of forming a dielectric optical thin film composed of a dielectric material deposited on a substrate is disclosed. The method comprises a step of applying assist energy directly onto the substrate in an atmosphere of a mixed gas containing hydrogen gas, thereby ionizing the hydrogen gas into hydrogen ion and getting the hydrogen ion to act on the dielectric material being deposited onto the substrate. The action of the hydrogen ion inhibits the crystals of the dielectric material from growing, whereby the dielectric optical thin film is amorphously structured, which reduces scattering in the thin film resulting in increased transmittance. The dielectric material is preferably metal oxide, and the mixed gas contains oxygen gas as well as hydrogen gas, where the hydrogen gas accounts for 0.1 to 2.0% of the total amount of the oxygen gas and hydrogen gas.

Abstract: There is provided a touch panel for a display device for reducing the whole thickness thereof when the touch panel is attached to the display device, increasing the accuracy of the positional information and improving the display quality and the durability thereof. One resistive layer of a pair of resistive layers disposed opposite to each other across a plurality of insulating dot spacers is laid on a translucent flat plate, and a light conductive plate of a front light unit is integrated with an outer surface side of the translucent flat plate. The translucent flat plate is formed of a PET film in place of a glass plate.

Abstract: A touch panel for a display device is structured such that one resistive layer of a pair of resistive layers disposed opposing each other across a plurality of insulating dot spacers is laid on a flat hard glass plate which is integrally combined with a light conductive plate of a front light unit sandwiching elastic spacers. The total thickness measuring when a touch panel is attached to a display device, is reduced, and the accuracy of the information on the position, the display quality and the durability are improved.